共查询到20条相似文献,搜索用时 93 毫秒
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通过选用不同埋弧焊焊接参数,对09MnNiDR钢进行相应的工艺评定试验。指出了影响09MnNiDR钢埋弧焊接头低温韧性的主要因素,并提出了焊接时应采取的工艺措施。 相似文献
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通过选用不同的焊材及不同的焊接参数,对低温材料09MnNiDR进行了一系列的工艺评定试验。指出了影响09MnNiDR焊接接头低温韧性的主要因素,并提出了焊接时应采取的工艺措施。表6 相似文献
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基于弧焊机器人对构件的立向焊接位置的焊接工艺进行了研究,通过大量实验研究焊接速度、焊接电流、焊接电压等人工调节因素对焊接质量的影响;总结针对该系统的各因素的调整方法和量值。实验表明,参数的适当改变使该系统能应用于立向位置的焊接,从而解决了指定构件的立向焊接。 相似文献
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Repair welding process of friction stir welding groove defect 总被引:1,自引:0,他引:1
The groove defect formed in the friction stir welding dramatically deteriorates weld appearances and mechanical properties of the joints owing to its larger size and penetration. Therefore, the friction stir repair welding was utilized to remove such a groove defect, and the focus was placed on the mechanical properties and microstructural characteristics of the repair joints so as to obtain an optimum repair welding process. The experimental results indicate that the groove defect can be removed by friction stir repair welding, and the offset repair welding process is superior to the symmetrical repair welding process. In the symmetrical repair welding process, a large number of fine cavity defects and an obvious aggregation of hard-brittle phase Al2Cu occur, accordingly the mechanical properties of the repair joint are weakened, and the fracture feature of repair joint is partially brittle and partially plastic. A good-quality repair joint can be obtained by the offset repair welding process, and the repair joint is fractured near the interface between the weld nugget zone and thermal-mechanically affected zone. 相似文献
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Yoshiaki Morisada Koki Tamashiro Masayoshi Kamai Rintaro Ueji Hidetoshi Fujii 《Welding International》2016,30(8):596-601
Much attention has been paid to FSW as a useful joining process that provides superior characteristics compared with conventional fusion welding. However, the FSW equipment must have a high stiffness due to the applied load and the tool torque, which increases the size of the equipment. Therefore, it is difficult to use the FSW technique on-site for repairs and/or hand-operated welding. In this study, the relationship between the FSW parameters and the process loads was investigated for the FSW with a counterbalanced tool and preheating to evaluate the possible miniaturization of the equipment. The results revealed that the counterbalanced tool concept with preheating was effective for the miniaturization of the equipment because it reduces the applied l and the tool torque during the FSW. Welding direction force Fx and transverse direction force Fy can be reduced below 70 N and 50 N respectively. 相似文献
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通过试验比较了MAG焊和CO2焊2种方法焊接驾驶室、柴油机等外观件,指出MAG焊具有一系列优点,特别是MAG焊的综合机械性能优于CO2气体保护焊,MAG焊的焊道表面质量有了明显的的提高,且MAG焊的总体成本低于CO2焊。 相似文献
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阮兴家 《锻压装备与制造技术》2012,47(3):47-48
针对卡车厂焊装车间主焊线摇杆部件损坏状况,对各杆件和焊缝强度进行受力分析和强度校核,采用新材料和焊接工艺进行改进。改进后摇杆满足了正常工作强度要求。 相似文献